The thing that happens in the bus with rosa parks was that when one of the white passengers were coming into the bus. the bus driver told rosa parks to move so the other white passenger could take her seat in the but rosa parks wanted to get treated better than how she just got treated so she refused.
The bus driver had her arrested she was later convicted for not following the law this made a lot of people mad and sparked the Montgomery boycott with another major person in African American History, Dr. Martin Luther King, jr.
The boycott saw that the African Americans refused using the bus to get around town.
And when the mini bus's set to empty the city had to do somthing. The boycott ended on December 20, 1956, after the supreme court said that you could not treat African American people unfairly.